Hey girls! This is one app to show your fiance. Right now ... One of the lovely things about getting engaged - apart from knowing that you're going to spend the rest of your life with the man of your dreams which is obviously the best thing - is that you get to wear A Big Sparkler on your finger.Although many men like to take the romantic route of proposing with an engagement ring all ready, more and more couples are choosing an engagement ring together.How To Know You're Choosing Quality DiamondsObviously, you want to go with something you love the look of - but you also need to knowwhat you're looking for, particularly if there are diamonds involved (I LOVE writing that word). You both will need to know that the diamonds you are choosing are the best quality available in your price range and that you're getting a good deal.Well - now there's an app for that. It's been put together by the GIA (Gemological Institute of America) and it's free. Using video and interactive tools you will learn how GIA grades color, cut, clarity and carat weight. How diamond color affects its value.So you can go shopping knowing that you're fully equipped to ask the right questions.The app is free (which is good, more money to spend on the ring!) and you can download it here.